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- Tue Jun 29, 2021 11:40 am
- Forum: ESP-IDF
- Topic: i2c_master_cmd_begin() returns ESP_FAIL
- Replies: 1
- Views: 3571
i2c_master_cmd_begin() returns ESP_FAIL
Hello, i am trying to read time from the rtc - PCF85263ATT, so i start with writing the write-slave-address (0xA2) and the register to start reading from (seconds register 0x1) and i get NACK (as it shows on the oscilloscope). This NACK causes the failure of i2c_master_cmd_begin() with ESP_FAIL erro...